Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Self-moving equipment rentals	$ 3,083,317	$ 2,692,413	$ 2,653,497
Self-storage revenues	477,262	418,741	367,276
Self-moving and self-storage products and service sales	344,929	265,091	264,146
Property management fees	31,603	30,406	29,148
Life insurance premiums	121,609	127,976	63,488
Property and casualty insurance premiums	68,779	66,053	60,853
Net investment and interest income	122,938	137,829	110,934
Other revenue	291,548	240,359	219,365
Total revenues	4,541,985	3,978,868	3,768,707
Costs and expenses:
Operating expenses	2,187,684	2,117,148	1,981,180
Commission expenses	329,609	288,332	288,408
Cost of sales	214,059	164,018	162,142
Benefits and losses	179,512	174,836	100,277
Amortization of deferred policy acquisition costs	28,293	31,219	28,556
Lease expense	28,470	26,882	33,158
Depreciation, net of (gains) losses on disposals	609,930	637,063	554,043
Net gains on disposal of real estate	3,281	(758)	(44)
Total costs and expenses	3,580,838	3,438,740	3,147,720
Earnings from operations	961,147	540,128	620,987
Other components of net periodic benefit costs	(987)	(1,054)	(1,013)
Interest expense	(163,502)	(160,950)	(142,445)
Pretax earnings	796,658	378,124	477,529
Income tax expense	(185,802)	63,924	(106,672)
Earnings available to common shareholders	$ 610,856	$ 442,048	$ 370,857
Basic and diluted earnings per common share	$ 31.15	$ 22.55	$ 18.93
Weighted average common shares outstanding: basic and diluted	19,607,788	19,603,708	19,592,048